Stewart Audio DSP 4x4, Operation Manual

Page: 8 / 13

DSP 4x4 Operations Manual Rev E Page 8
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Connection methods for balanced and unbalanced outputs are identical as the methods for inputs
as referenced in Section 5.3.3
5.3.5 RS-232 Connection
Your DSP 4x4 can be controlled using the RS–232 connection on the rear of the
device. For the available RS–232 commands, see below.
All communications should be performed at 9600 baud, 8 bits, 1 stop bit, no
parity, and no flow control.
Command Name and Description Hex Command
TRIM
Changes trim by
AMOUNT
1
on
CHAN
2
0x12 AMOUNT
1
CHAN
2
0x03
VOLUME_DISCRETE
Sets
CHAN
2
volume to
VOL
3
0x12 0x06 CHAN
2
VOL
3
0x03
VOLUME_STATUS
Return
CHAN
2
volume in the format:
0x06 VOL
3
0x0A
0x12 0x07 CHAN
2
0x03
FORCE_MUTE_ON
Turn mute off for
CHAN
2
0x12 0x08 CHAN
2
0x03
FORCE_MUTE_OFF
Turn mute on for
CHAN
2
0x12 0x09 CHAN
2
0x03
MUTE_TOGGLE
Toggle mute on
CHAN
2
0x12 0x10 CHAN
2
0x03
MUTE_STATUS
Return
CHAN
2
mute status in the format:
0x06 MUTE5
3
0x0A
0x12 0x11 CHAN
2
0x03
CHANGE_PRESET
Change to
PRESET
0x12 0x12 PRESET
3
0x03
FIRMWARE_VERSION
Returns the current version in the format:
0x02 0xXX 0xYY 0x03
( XX = Version, YY = Revision)
0x12 0x13 0x13 0x03
1
AMOUNT is
0x01 = up 10%, 0x02 = up 5%; 0x04 = down 10%; 0x05 = down 5%
2
CHAN is
0x00 = all channels; 0x01 = channel 1: 0x02 = channel 2; etc.
3
VOLUME is in the range of 0 – 100 expressed in hexadecimal (0x00 – 0x64).
4
Preset is zero-based in the range 0x00 – 0x09.
5
Mute is in the format 0x00 = unmuted; 0x01 = muted